ESR1 and triple-negative breast carcinoma: it is upregulated in patient samplesis negatively correlated with estrogen receptor (ER) and progesterone receptor (PR) status and positively to basal-like status, triple-negative breast cancer status, Nottingham prognostic index (NPI) and Scarff–Bloom–Richardson gradehigher expression is associated with a poor prognosisits expression correlated positively with PTTG1 expressionco-expressed genes with PTTG3P are connected with mitotic nuclear division and cell cycle